Socioeconomic disadvantages during preadolescence predicted less involvement in conventional sexual partner trajectories from ages 16 to 18.5 years. (link.springer.com)
«I am a Licensed Clinical Psychologist, I have spent numerous years working with individuals, couples and families ranging from preadolescence through adulthood, with a variety of concerns including anxiety, depression, chronic pain, stress management, PTSD, ADHD, adjustment to life changes and / or medical treatments, grief and loss issues; parenting concerns; couple issues; or problems coping with daily stress. (psychologytoday.com)
Your Child: Emotional, Behavioral, and Cognitive Development from Birth through Preadolescence (Book) (childdevelopmentinfo.com)